Fit For Harley 40-0457 Aluminum Vented Engine Motor Breather Canister Crankcase Head Gearbox Oil Collector. Replace part number:40-0457 Hose Fitting: 3/8", Fitting O.D.: 0.47", Length w/Nipple: 2.21"-Length w/o Nipple: 1.523", Diameter: 1.3" Crafted from high-strength plastic, this Oil Separator Segregator boasts resistance to corrosion, wear, high temperatures, and rust, along with dependable quality and outstanding performance. Serving as a fuel pretreatment component, the cylinder oil separator breather valve efficiently eliminates water and contaminants from fuel, stopping these substances from corroding and abrading fuel system and engine parts., Manufacturer: ZTAWWCJ